Doty Scientific Solids Probes

... with long experience in developing CP/MAS-Probes  for Varian, Agilent, Bruker, Jeol, Tecmag and other systems.

Various probes are available:

  1.    Magic Angle Gradient MAS-MAG Probes
  2.   Quad-Fast-MAS H/X/Y/Z
  3.   Solids NMR Probes
  4.   Static DNP Probes
  5.   CryoMAS
  6.   MRI Coils
  7.   BMAX xy Low E
  8.   DNP-NMR Probes
  9.   Liquids NMR Probes
  10.   PROTON max Low E
  11.   Diffusion / PFG Probes
  12.   HT MAS
  13.   Accessories & Supplies
  14.   SAS Switched Angle
  15.   Non-Spinning NMR Probes
  16.   Wideline Probes, Non-Spinning

Supporting the NMR/MRI researcher with custom probe development expertise and the best solids NMR and MRI-RF products. 

Please call us for technical details and specifications.

MAS-Rotors & Caps

Manufactured from the highest purity Zirconia, our MAS Rotors  provide the NMR spectroscopist with the ultimate alternative for analysis of solid samples.  The need to solvate solid samples is eliminated. They are available for most of the present solid state NMR spectrometers. Our MAS Rotors are carefully examined for material irregularities by various methods before and after the precision machining process. High precision (which becomes a necessity for proper spinning performance) is maintained in the manufacture of the end caps. Most end caps are fitted with O-rings for better sealing. Some caps have axial holes for venting.


Agilent (Varian) Nano Probe Tubes
Original Style

Constructed of Pyrex® glass, these NanoProbe tubes are suitable for NMR analysis of solids, semi-solids and liquids.  Special machining at close tolerances allow the tubes to operate at 2,5 kHz and slightly higher. These NanoProbe tubes offer the advantage of easy handling, cleaning, filling and reliability (tested in Varian NanoProbes).Each cap has an axial hole for venting air from the tube. A small plug is provided for closing the hole in experiments where evaporation and/or liquid spill over must be avoided. O-ring seals are used on caps and plugs. With special caps (on request) higher spinning speeds are possible (3 - 4 kHz).


Three volumes are available 
110 µl- each consisting of a Pyrex tube and a cap (Ertalyte or Kel-F)
60 µl and 40 µl- each consisting of a Pyrex tube, a cap and a plug (Ertalyte or Kel-F)


Kel-F Caps for 2.5mm Rotors 
Bruker CP/MAS Probes

2.5mm rotors for Bruker CP / MAS probes with radically reduced 1H background (Vmax 20 - 25 kHz), allows excellent spinning speed with significantly less 1H background signal.

Rotor Clamp

Rotor Clamp for Bruker 
2.5mm CP/MAS Probes.

Enables absolutely precise removal of the end cap when used in conjunction with the end cap removal tool supplied with the probe.


For Bruker 
1.3, 2,5, 3.2 & 4.0 mm Rotors
The worldʼs first decent rotor turbine cap remover

Many years ago we found the top or bottom cap of various MAS-probes were very difficult to remove using a tool supplied with the probe. 
Rototec-Spintec  started to develop  a rotor clamp to grip the rotor and enable the user to unscrew the rotor from the upper and lower caps. 
This product was the world’s first rotor turbine cap remover.

Cap Remover Instruction

Glass Inserts for Rotors
- Pyrex MAS Rotor Inserts - 
Product Group B

For air-sensitive samples and semi-solid samples such as gels or highly viscous liquids, the sample is simply sealed into the insert tube by heat-sealing with a torch, or by applying a small drop of epoxy to the constriction. After the epoxy is set and dry, the sealed insert is then cut through the constriction with a glass saw. Using a small funnel, powder samples can be packed into the insert. Gelatinous samples can be incorporated for the sealing of air-sensitive samples.